London's Pulse: Medical Officer of Health reports 1848-1972
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Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
City of London 1951
[Report of the Medical Officer of Health for London, City of ]
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13
Graph 2.
Scale, 5 Entrances, 1/12 ins.
DESTRUCTION OF RATS IN SEWERS, MAY, 1951-MARCH, 1952.
FOUR TREATMENTS AT 3-MONTHLY INTERVALS.
Direct Poisoning with "1080," Sodium Fluoroacetate, showing Progressive Fall of
Poison " Takes."
Small Columns show Number of Poison "Takes," Tall Columns show the Number of
Entrances Baited.